Because of their light, fireflies are among the most intriguing insects. This book gives lucid explanations and interesting examples of the body parts, life cycle, habitat, and mating habits of the firefly. A child who has never seen a firefly could read this book and understand what a firefly is. A child who has experienced the magic of watching and capturing fireflies at dusk will gain a greater understanding about the reason for the twinkling lights he or she witnessed in person. The scientific explanation for these bugs is easy to understand and is illustrated with wonderful photographs that explain the text. For example, at one point the book talks about the metamorphic process and the time that a firefly spends as a glowworm. The picture that illustrates this is a photograph of a glowworm as seen from the underside so the "glow" is visible. This book would be beneficial to an elementary school science library and helpful for a science discussion at the elementary school level. 2006, Thomson Gale/The Thompson Corporation, Ages 6 to 10.